ASTROSAT CZTI

Data Quality Report

Orbit 41541

Creation date: 2024-06-27T22:30:13.658904
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_035T02_9000005676_41541cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41541cztM0_level2_quad_clean.evt
Size (bytes)1,285,799,040327,107,520
Size1.2 GB 312.0 MB
Events in quadrant A10,950,5562,223,591
Events in quadrant B12,350,1652,159,806
Events in quadrant C10,569,5332,137,214
Events in quadrant D12,138,0861,970,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04180
B04180
C04180
D04180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442656
B0507285
C0442895
D0505585

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20513880.428996%
B205137303.558719%
C205133931.915858%
D205135002.437479%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 26065 20517 50 50 0.19% 0.24%
B 26064 20514 564 564 2.16% 2.75%
C 26064 20514 389 389 1.49% 1.90%
D 26064 20514 475 475 1.82% 2.32%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 1775426 3838.02 2266 2219 462.0
A 2 79 341817 735.04 2266 2219 462.0
A 13 254 35121 71.21 2266 2219 462.0
B 5 255 2004952 4733.03 2211 2148 423.2
B 0 186 1233734 2910.49 2211 2148 423.2
B 0 245 191991 448.64 2211 2148 423.2
C 0 10 1110441 2196.08 2181 2193 504.6
C 15 214 886418 1752.16 2181 2193 504.6
C 14 254 33764 62.56 2181 2193 504.6
D 2 249 938894 1749.5 2198 2131 535.4
D 13 249 590271 1098.41 2198 2131 535.4
D 5 222 581750 1082.5 2198 2131 535.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter